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Diffstat (limited to 'parameter/SystemClass.cpp')
-rw-r--r-- | parameter/SystemClass.cpp | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/parameter/SystemClass.cpp b/parameter/SystemClass.cpp new file mode 100644 index 0000000..62b6538 --- /dev/null +++ b/parameter/SystemClass.cpp @@ -0,0 +1,177 @@ +/* <auto_header> + * <FILENAME> + * + * INTEL CONFIDENTIAL + * Copyright © 2011 Intel + * Corporation All Rights Reserved. + * + * The source code contained or described herein and all documents related to + * the source code ("Material") are owned by Intel Corporation or its suppliers + * or licensors. Title to the Material remains with Intel Corporation or its + * suppliers and licensors. The Material contains trade secrets and proprietary + * and confidential information of Intel or its suppliers and licensors. The + * Material is protected by worldwide copyright and trade secret laws and + * treaty provisions. No part of the Material may be used, copied, reproduced, + * modified, published, uploaded, posted, transmitted, distributed, or + * disclosed in any way without Intel’s prior express written permission. + * + * No license under any patent, copyright, trade secret or other intellectual + * property right is granted to or conferred upon you by disclosure or delivery + * of the Materials, either expressly, by implication, inducement, estoppel or + * otherwise. Any license under such intellectual property rights must be + * express and approved by Intel in writing. + * + * AUTHOR: Patrick Benavoli (patrickx.benavoli@intel.com) + * CREATED: 2011-06-01 + * UPDATED: 2011-07-27 + * + * + * </auto_header> + */ +#include <dlfcn.h> +#include <dirent.h> +#include "SystemClass.h" +#include "SubsystemLibrary.h" +#include "AutoLog.h" + +#define base CConfigurableElement + +// Used by subsystem plugins +typedef void (*GetSusbystemBuilder)(CSubsystemLibrary*); + +CSystemClass::CSystemClass(const string& strName) : base(strName), _pSubsystemLibrary(new CSubsystemLibrary) +{ +} + +CSystemClass::~CSystemClass() +{ + delete _pSubsystemLibrary; +} + +bool CSystemClass::childrenAreDynamic() const +{ + return true; +} + +string CSystemClass::getKind() const +{ + return "SystemClass"; +} + +bool CSystemClass::loadSubsystems(string& strError, const vector<string>& astrPluginFolderPaths) +{ + CAutoLog autoLlog(this, "Loading subsystem plugins"); + + // Plugin list + vector<string> astrPluginFiles; + + uint32_t uiFolderLocation; + + for (uiFolderLocation = 0; uiFolderLocation < astrPluginFolderPaths.size(); uiFolderLocation++) { + + // Folder for current SystemClass + string strPluginPath = astrPluginFolderPaths[uiFolderLocation] + "/" + getName() + "/"; + + // Get plugin list + getPluginFiles(strPluginPath, astrPluginFiles); + } + // Check at least one subsystem plugin available + if (!astrPluginFiles.size()) { + + // No plugin found? + strError = "No subsystem plugin found"; + } + + // Actually load plugins + uint32_t uiPlugin; + // Start clean + _pSubsystemLibrary->clean(); + + for (uiPlugin = 0; uiPlugin < astrPluginFiles.size(); uiPlugin++) { + + string strPluginFileName = astrPluginFiles[uiPlugin]; + + log("Loading subsystem plugin path \"%s\"", strPluginFileName.c_str()); + + void* lib_handle = dlopen(strPluginFileName.c_str(), RTLD_LAZY); + + if (!lib_handle) { + + // Return error + const char* pcError = dlerror(); + + if (pcError) { + + strError = pcError; + } else { + + strError = "Unable to load subsystem plugin " + strPluginFileName; + } + + _pSubsystemLibrary->clean(); + + return false; + } + + GetSusbystemBuilder pfnGetSusbystemBuilder = (GetSusbystemBuilder)dlsym(lib_handle, "getSusbystemBuilder"); + + if (!pfnGetSusbystemBuilder) { + + strError = "Subsystem plugin " + strPluginFileName + " does not contain getSusbystemBuilder symbol."; + + _pSubsystemLibrary->clean(); + + return false; + } + + // Fill library + pfnGetSusbystemBuilder(_pSubsystemLibrary); + } + + return true; +} + +bool CSystemClass::getPluginFiles(const string& strPluginPath, vector<string>& astrPluginFiles) const +{ + log("Seeking subsystem plugins from folder \"%s\"", strPluginPath.c_str()); + + DIR *dirp; + struct dirent *dp; + + if ((dirp = opendir(strPluginPath.c_str())) == NULL) { + + return false; + } + + const string strPluginPattern("-subsystem.so"); + + // Parse it and load plugins + while ((dp = readdir(dirp)) != NULL) { + + string strFileName(dp->d_name); + + // Check file name ends with "-susbsystem.so" + size_t uiPatternPos = strFileName.rfind(strPluginPattern, -1); + + if (uiPatternPos != (size_t)-1 && uiPatternPos == strFileName.size() - strPluginPattern.size()) { + // Found plugin + astrPluginFiles.push_back(strPluginPath + strFileName); + } + } + + // Close plugin folder + closedir(dirp); + + return true; +} + +const CSubsystemLibrary* CSystemClass::getSubsystemLibrary() const +{ + return _pSubsystemLibrary; +} + +bool CSystemClass::init(string& strError) +{ + return base::init(strError); +} + |